Nintendo 3DS owners who purchased Crosswords Plus and Art Academy: Lessons for Anyone! have begun to receive download vouchers for Donkey Kong: Original Edition, according to Nintendo World Report.
In a promotion that began last October, Nintendo offered a download of Donkey Kong: Original Edition to Club Nintendo who purchase and register the games before January 6, 2013. According to Nintendo, Donkey Kong: Original Edition is "a special version of Donkey Kong with content never before seen in the U.S. and is not available for purchase."
Donkey Kong: Original Edition will also be free for purchasers of Professor Layton and the Miracle Mask, Style Savvy: Trendsetters, and Paper Mario Sticker Star.
We've reached out to Nintendo to confirm that the download vouchers are being sent, and will update this article as more information becomes available.